Starting with the Top of the Atmosphere average annual insolation intercepted by the disk of the lit hemisphere, this flux is divided by 2 to produce the average hemisphere insolation (Action A). To this diluted flux is then applied the Bond Albedo (Action B) to generate the post-albedo flux (1-B) that is captured by the Martian Climate System and recycled internally within the Atmospheric Reservoir by non-lossy Adiabatic Convection (Table 10).
In the thin thermally radiant transparent atmosphere of Mars the surface heating process is diabatic (50% 50%). However, in the DAET model computation the surface partition ratio applied is 25% radiant flux and 75% thermal flux (Table 10). The reason for applying this ratio is because it is the solar energy that is split diabatically, whereas the convecting air above the surface air retains energy from previous flux cycles and so behaves as an energy reservoir that indefinitely retains a finite quantity of historic energy flux.
The 50:50 diabatic ratio is best observed in the night time component of the model where all the energy flux is delivered by the advected air (Figure 4). The convected air diabatically heats the unlit surface and so the upwelling surface radiant flux loss to space through the atmospheric window must equal the downwelling thermal air flux delivered to this surface, therefore the 50:50 diabatic ratio applies.